The strength of an electromagnet depends upon 2 thing what are they

The strength of the current passing through the coil, the greater the current, the greater the strength. ...

The number of turns in the coils, the greater the number of coils, the greater the strength. ...

Whether the core is made up of a soft or hard magnetic material.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2